Syria has complained to the United Nations (UN) about several officials who, it claims, entered the country without visas in violation of its sovereignty.

These include Republican Senator John McCain, former French Foreign Minister Bernard Kouchner and former U.S. diplomat Peter Galbraith, according to Reuters.

Syria’s UN ambassador, Bashar Ja’afari, called on UN Secretary-General Ban Ki-moon and the 15-member Security Council to pressure governments to take “the necessary measures against their nationals who enter Syrian territory illegally.”

“Such actions are a blatant violation of Syria’s sovereignty and of the resolutions of the Security Council concerning Syria,” Ja’afari wrote in a letter dated Dec. 30 and seen by Reuters on Monday.

He complained generally about “certain journalists and prominent figures” entering Syria illegally but singled out McCain for entering Syria in June 2013. McCain visited Syria in May 2013 and met with some Syrian rebels, his spokesman said at the time.

Ja’afari also cited Kouchner for visiting in November 2014, Galbraith for traveling to Syria in December 2014 with other U.S. political and military leaders, and former Kuwaiti politician Walid al-Tabtaba’i for entering Syria in September 2013.

McCain, been a vocal opponent of President Barack Obama’s Syrian policy, has in the past repeatedly called for his country to take action in the civil war in Syria, saying that Syrian President Bashar al-Assad will make no effort to end the country’s civil war as long as he is winning on the battle field.

Syria has used the tactic of complaining to the UN over “violation of its sovereignty” in the past, including complaining against Israel over alleged airstrikes in the country.