Russia will regret its decision to veto the latest UN Security Council resolution on Syria, dpa cited British Foreign Secretary William Hague as saying Friday. Hague warned that it was now likely that countries would step up arms supplies to opposition fighters. Russia would also find that its interests in the Middle East would suffer long-term as a result, he warned. "We will all be doing more outside the Security Council and intensifying our work to support the Syrian opposition, to give humanitarian aid," said Hague in a BBC interview. Asked whether Britain would be involved in arming the opposition in Syria, he said: "I don't rule out any option for the future because we can't foresee how it will develop, but it's never been our policy in any of the conflicts in the Middle East to send lethal assistance to any of the parties involved."