Romney takes big lead in Nevada, poll shows Syria locks down Hama on anniversary of massacre Blast kills 7 in Colombia US crew claims $3bn in sunken treasure Hundreds rescued as Papua New Guinea ferry sinks Fourth potentially habitable planet discovered Seven aid workers in Yemen freed 160 dead as cold snap grips Europe Russia, Ukraine argue over gas as EU reports shortage BR-Picture ICC rejects Qadhafi daughter`s appeal Palestinians throw shoes, stones at UN convoy Kuwait opposition seen making gains in polls UK appoints first envoy to Somalia in 21 years Iran accepts 45pc of India oil sales in rupees