Britain's Prime Minister David Cameron is urging concerted action from the international community against Syrian President Bashar Assad's regime amid reports of another massacre of civilians there, according to AP. Syrian opposition groups said scores have died in what activists describe as a new massacre in the central Hama province but that the exact death toll and circumstances are impossible to confirm. Cameron said Thursday that if the reports of the "brutal and sickening attack" are true, it adds further proof that the Assad regime is "completely illegitimate and cannot stand." Speaking during a visit to Norway, the prime minister insisted more must be done to isolate Assad's regime and show that "the whole world" wants to see political transition in Syria and condemns "absolutely" the Syrian regime.