The White House has called on Syria to intensify their efforts to remove chemical weapons from the country so they can be destroyed.
Defence Secretary Chuck Hagel said the US is "concerned" that Syria is behind in removing chemical weapons material that are due to be destroyed under an international agreement.
Hagel said he had asked Russian officials to urge the Syrian regime to comply with the deal.
Despite the delay, Hagel believes the removal effort could get back on track.
More top news
A court has ruled that the original coffin in which Lee Harvey Oswald was buried belongs to his brother, not the undertaker's that sold it.
Manic Street Preachers lyricist went missing nearly 20 years ago but mystery still surrounds exactly what happened to him.
Deputy Prime Minister admitted he wanted to hit David Cameron on more than 20 occasions on late-night chat show 'The Last Leg'.