Prime Minister Theresa May has agreed with her US and French counterparts that the international community needs to respond to an alleged chemical attack in Syria. Link Source (BBC News) : http://www.bbc.com/news/uk-43719284 In phone calls, Emmanuel Macron and Donald Trump said those responsible should be "held to account". The international chemical weapons body has sent a team to the site in Douma. But Russia, which provides military support to Syria, has said there is no evidence of a chemical attack. Medical sources say dozens of people were killed, including children, during the alleged toxic bombing of formerly rebel-held Douma, in the Eastern Ghouta region. Later on Tuesday, the UN Security Council rejected a draft US resolution, which proposed a new inquiry to establish who was to blame. Syria 'chemical attack': What we know Why is there a war in Syria? Russia: No evidence of chemical attack Earlier, US President Trump cancelled a planned trip to Latin America to focus on the issue. He has pledged a "forceful response". Downing Street said the separate phone calls established the countries would work together to take action to "uphold the worldwide prohibition on the use of chemical weapons". A spokeswoman added: "They agreed that reports of a chemical weapons attack in Syria were utterly reprehensible and if confirmed, represented further evidence of the Assad regime's appalling cruelty against its own people and total disregard for its legal obligations not to use these weapons."