Iraq's government warned Monday that its relations with the United States were at risk after deadly American air strikes against a pro-Iran group sparked anger on the streets with protesters torching U.S. flags.

At least 25 fighters were killed in Sunday night's attacks which saw U.S. planes hit several bases belonging to the Hezbollah Brigades, one of the most radical factions of Hashed al-Shaabi, a Tehran-backed Iraqi paramilitary coalition.

U.S. air strikes against a pro-Iran group in Iraq killed at least 25 fighters, a paramilitary umbrella said Monday, triggering anger in a country caught up in mounting tensions between Tehran and Washington.

Sunday night's attacks saw U.S. planes hit several bases belonging to Kataeb Hezbollah, one of the most radical factions of Hashed al-Shaabi, a Tehran-backed Iraqi paramilitary coalition.

Israel has said it would withhold millions more dollars worth of tax money it collects on behalf of the Palestinian Authority, saying the amount equals payment made to families of Palestinian attackers.

France and Egypt called Monday for the "greatest restraint" by Libyan and international authorities to avoid escalating the conflict in Libya, a statement from President Emmanuel Macron's office said.

Turkey's presidency sent a motion to parliament on Monday to approve a military deployment in support of the UN-backed government in Libya, a close ally of Turkey against regional rivals. 

An Iranian-backed militia said Monday that the death toll from U.S. military strikes in Iraq and Syria against its fighters has risen to 25, vowing to exact revenge for the "aggression of evil American ravens."

The U.S. attack - the largest yet targeting an Iraqi state-sanctioned militia - and the calls for retaliation, represent a new escalation in the proxy war between the U.S. and Iran playing out in the Middle East that could threaten U.S. interests in the region.

Iran said Monday that the United States has shown its "support for terrorism" by carrying out air strikes on forces in Iraq that have dealt blows against the Islamic State group.

The Pentagon said on Sunday that it targeted an Iran-linked militant group in western Iraq and eastern Syria in response to a barrage of rockets that killed a US civilian contractor two days earlier.

Fifteen fighters, including commanders, were killed Sunday night in U.S. strikes against a pro-Iran armed group in western Iraq, an official from the Tehran-backed Hashed al-Shaabi paramilitary told AFP. 

A missile struck a passing out ceremony in southern Yemen on Sunday, killing at least five southern separatists, security officials said.

Greece wants to be included in U.N.-sponsored talks in January on the Libya conflict, Prime Minister Kyriakos Mitsotakis said Sunday, as tensions escalate with neighbors Turkey over the issue.