Trump warns Russia may have to pay for alleged Syria gas attack

"Can not allow it", Trump told reporters on Monday during a Cabinet meeting as he warned that "nothing's off the table".

"We can not allow atrocities like that", he said.

"One other thing that Mattis actually said is why are chemical weapons still being used (in Syria) when Russian Federation was part of the framework of the 2013 agreement in which to get rid of chemical weapons, (and) biological weapons in Syria", explained Rosales.

Trump - who previous year launched a missile strike on a Syrian air base after sarin was used in the town of Khan Sheikhun - warned after the latest accusations that there would be a "big price to pay".

Israel does not typically comment on its operations in Syria, and it is unclear whether the missile attack was linked to the alleged use of chemical weapons.

"Russia will inevitably veto the USA resolution criticising Assad, and Washington will use this to justify military strikes", he said.

US Defence Secretary Jim Mattis on Monday raised the possibility of military action against Syria if it was proved to have carried out a chemical weapons attack.

Asked in Berlin whether she supports the idea, German Chancellor Angela Merkel responded unenthusiastically, saying that "the evidence that chemical weapons were used there is very, very clear".

The Kremlin on Monday warned against jumping to conclusions over a suspected poison gas attack on the Syrian rebel-held town of Douma, after Moscow said its experts had found no traces of chemical weapons. An attack with chlorine, which can be used as a weapon but is not outright banned by the treaty, could raise precedent issues, as there have been numerous recent allegations of chlorine attacks in Syria that have drawn no response from the Trump administration.

"President Trump has indicated that the United States will decide a response shortly..." Russian Federation and Syria said there was no evidence that a gas attack had taken place.

Washington and Paris denied any involvement.

The attack comes nearly exactly a year after a chemical atrocity in the northern Syrian town of Khan Sheikhoun killed dozens of people.

"The United States is determined to see that the monster who dropped chemical weapons on the Syrian people held to account", Haley continued, emphasizing that "meetings are ongoing" and "important decisions are being weighed as we speak".

Israel has not commented, but a former commander of the Israeli Air Force has said it was nearly certainly Israel that carried out the strike.

The situation is being discussed on Monday by the UN Security Council - a group of countries that work together to try to bring peace - and the European Union has called for an "immediate response by the worldwide community".

"We must not overlook Russian Federation and Iran's roles in enabling the Assad regime's murderous destruction", she continued.

Israel has accused Damascus of allowing Iran to set up a complex at the T-4 base to supply arms to its ally, Lebanon´s Hezbollah, and in the past its forces have hit convoys and bases of Iranian-backed militias that fight alongside Assad´s troops. Regime forces and their Iranian and Russian allies have made steady progress over the past couple years in recapturing territory held by opposition groups.

Before the Syrian civil war broke out in 2011, Israel had reached an unspoken understanding with Syria that allowed the two neighboring countries to co-exist, even though Syria has never recognized the state of Israel.

Mr Trump had warned of a "big price to pay" following the reports of a poison gas attack on the Syrian town of Douma which killed dozens of people, including children.

Following fraught negotiations and a regime bombing blitz, state media announced Sunday a deal for Jaish al-Islam to leave Douma within 48 hours and release hostages.

  • Rogelio Becker