Trump is bent on international isolation. The Iranian president ridiculed the United States. This move is "rare in the world."
CCTV News:US President Trump signed an announcement recognizing Israel’s sovereignty over the Golan Heights, which triggered the anger of Syria, the country concerned. The Syrian Ministry of Foreign Affairs issued a statement on the evening of 25th local time, expressing its firm opposition, saying that the US move was a flagrant violation of Syria’s sovereignty and territorial integrity. On the 26th, demonstrations broke out in many places in Syria to protest this decision of the United States.
On the 26th, in Damascus, the capital of Syria, Quneitra near the Golan Heights in the south, Homs in the middle, Latakia in the northwest, Aleppo in the north, Hasakeh in the northeast, Deir ez-Zor in the east, and other places, Syrian people took to the streets in succession, holding demonstrations and rallies to protest the recognition of Israel’s sovereignty over the Golan Heights by the United States.

Ministry of Foreign Affairs of China: Oppose unilaterally changing the facts.
At the regular press conference of the Foreign Ministry of China on 26th, spokesman Geng Shuang responded to the issue that "US President Trump signed a proclamation formally recognizing Israeli sovereignty over the Golan Heights".
Geng Shuang said that the international community recognized that the Golan Heights was occupied. The United Nations Security Council has repeatedly passed resolutions demanding that Israel withdraw from the Golan Heights. China is opposed to changing the facts through unilateral actions, and does not want to see further tension escalation in the regional situation.

The United States is trapped in international isolation.
The Arab world strongly opposes the United States’ recognition of Israel’s sovereignty over the Golan Heights. Saudi Arabia, Bahrain, Qatar and Kuwait are "Gulf allies" of the United States, and all of them have American troops stationed at home on the 26th. These four countries have successively issued statements opposing this move of the United States, believing that it will endanger the peace process and affect regional stability.
On the same day, Jumana Gnemat, Jordanian Minister of State for Information Affairs and government spokesperson, said that Jordan rejected any act of recognizing Israel’s "sovereignty" over the Golan Heights, which is Syrian territory occupied by Israel according to international law.
The Palestinian presidential palace issued a statement on the 26th, saying that no matter how long the occupation lasts, the "sovereignty" of the Golan Heights cannot be decided by Israel and the United States. Any decision without the UN Security Council or the UN General Assembly has no legitimacy.
On the same day, Iranian President Rouhani sarcastically said that this move by the United States was "rare in the world" and "it is inconceivable that the United States would come to the Middle East and give the land of one country to another occupying power".

During a meeting with Russian President Vladimir Putin, Lebanese President Orn 26, who is visiting Moscow, said that this move by the United States undermined the foundation and principles of international law and the United Nations, and made Israel’s neighbors deeply uneasy.
On the same day, Russian Presidential Press Secretary peskov stressed that the US move had a negative impact on the settlement of the Middle East issue and the political settlement of the Syrian issue. "Russia deeply regrets that the United States has once again violated international law.".
Volodin, chairman of the Russian State Duma, the lower house of parliament, pointed out on 26th that the U.S. move would "boost hegemonism" and provoke countries to "fight against each other", so that "whoever has the fist is in charge" would prevail, which undoubtedly opened a "highway to war".
EU members of the Security Council: do not recognize sovereignty.
On 26th, five EU members of the UN Security Council also issued a joint statement saying that their positions on the Golan Heights have not changed, and they do not recognize the Golan Heights as Israeli territory.
Mark Paxton, Permanent Representative of Belgium to the United Nations, read this statement to the media reporters on behalf of France, Germany, Britain, Poland and Belgium. The statement said that the position of the five countries on the status of the Golan Heights is well known and has not changed. According to international law and relevant Security Council resolutions, especially resolutions 242 and 497, the five countries do not recognize Israel’s sovereignty over the territories occupied by Israel since June 1967, including the Golan Heights, and they do not consider these occupied territories as Israeli territories.

The statement said that the use of violence to annex territory is inadmissible under international law, and any unilateral declaration of border changes violates the Charter of the United Nations and undermines the foundation of the international order. The recognition of illegally annexed territory may have a far-reaching impact and also have an impact on the regional situation, and the five countries express strong concern about this.
Israeli troops send more troops to Gaza border to recruit reservists.
From the 25th to the early morning of 26th local time, the biggest conflict broke out between Israeli and Palestinian armed groups in Gaza in recent months. By the day of the 26th, the situation had eased. However, Israeli Prime Minister Benjamin Netanyahu called a meeting of the security cabinet on the same day to discuss countermeasures, and threatened that Israel was preparing to launch more military operations — — Netanyahu said that Israel will take all necessary measures to defend the country and people.

Subsequently, the Israeli military announced that, after consulting with Netanyahu, it began to send more troops to the border areas of the Gaza Strip and recruit some reservists to cope with the possible escalation of the situation. On the evening of the same day, a rocket fired from the Gaza once again triggered the Israeli air defense alarm — — However, the Israeli military did not elaborate further on this.
The United Nations calls on both sides to exercise utmost restraint.
The United Nations Security Council held a meeting on the situation in Palestine and Israel on 26th. The United Nations Special Coordinator for the Middle East Peace Process, Nicola Mladenov, said in his latest briefing on the Palestinian-Israeli situation that the new round of Palestinian-Israeli conflict will "bring a devastating blow" and "bring serious consequences" to Israelis living in the surrounding areas of the Gaza Strip, and it is likely to "bring negative effects" to the whole region. Mladenov called on both sides to exercise utmost restraint under extremely tense circumstances.
It is understood that at present, the United Nations is working closely with Egypt and relevant parties to ensure that the situation will not get out of control.