Britain, U.S. consider more sanctions against Assad, supporters

By Lesley Wroughton LONDON (Reuters) - Britain and the United States said on Sunday they were considering imposing additional sanctions on Syrian President Bashar al-Assad and his supporters for their actions in Syria's war. British Foreign Secretary Boris Johnson and U.S. Secretary of State John Kerry, speaking after briefing allies in London on a new diplomatic initiative on Syria, also called on Russia and Iran to agree to a new ceasefire. The threat of more sanctions on Syria came before a E