Washington, Ramadan 24, 1435, Jul 21, 2014, SPA -- US President Barack Obama said the international community must focus on bringing an end to violence in Gaza amid a rising number of Palestinian and Israeli deaths. Obama said the US has "serious concerns" about the rising death toll and will work to seek an immediate cessation of hostilities. "The work will not be easy," Obama says at the White House. "Obviously there are enormous passions involved in this and some very difficult strategic efforts involved, nevertheless I've asked (Secretary of State John Kerry) to do everything he can to negotiate." --SPA 19:21 LOCAL TIME 16:21 GMT www.spa.gov.sa/w