Talks on Syria between major powers on Tuesday aim to restore a ceasefire across the country and get aid into besieged areas to encourage opposition groups to return to negotiations in Geneva, Germany's foreign minister said. "We must find a way back into the political process... It's about improving the conditions for the ceasefire and humanitarian aid so as to win the opposition over to negotiate with the regime in Geneva," Frank-Walter Steinmeier told reporters before a meeting that includes ministers from Russia, the United States, Europe and Middle Eastern states.