U.S. sceptical of Syria chemical arms declaration - U.N. envoy

UNITED NATIONS (Reuters) - The United States is reviewing with scepticism the Syrian government's chemical arms declaration, the U.S. envoy to the United Nations said on Tuesday as another official cautioned that intelligence suggested Syria may try to hide some weapons.

Under a Russian-U.S. proposal, Syria agreed in September to destroy its chemical weapons program by mid-2014, averting a threat of missile strikes by Washington following an August 21 sarin gas attack in Damascus that killed hundreds of people.