The governments of Iran and Syria have signed a pact to strengthen military and defense cooperation.

The deal was signed on Wednesday in Damascus by Iran’s armed forces chief, Major General Mohammad Bagheri, and Syrian Defense Minister, Ali Abdullah Ayyoub. Bagheri said that the military agreement is aimed at “fighting terrorism and countering American pressure.”

Syria was one of the few countries that supported the Iranians during their bloody 1980-88 war with Iraq. And in 2006, the two countries signed a deal cementing their military alliance. They share a disdain for Washington.

“The people and countries of the region do not welcome the presence of the United States, and our response to the American prattling will continue,” Bagheri added in a statement that was carried on Iranian state television.

“We will strengthen Syria’s air defense systems within the framework of strengthening military cooperation between the two countries. Bilateral military and security cooperation is qualitative and ongoing… despite increasing pressure and the mounting severity of threats,” he added with a nod to the U.S. sanctions and the American-led coalition.

Bagheri accused Turkey of dragging its feet in following through on agreements regarding the withdrawal of terrorist groups from Syria. “Turkey must realize that the solution to its security problems is through negotiation with the Syrian side, and not through military deployment in the Arab country,” he added. 

Defense Minister Ayoub said, through the Syrian state news agency SANA, that the Syrian-Iranian alliance is both “strategic and firm.” He accused Israel of being behind the terror groups in the country.

Israel has launched hundreds of airstrikes in Syria since the start of the civil war in 2011, including attacks against Iranian forces.