Russia and America have agreed to re-set their relationship, and launch a new era of co-operation. The leaders of the two countries met for the first time ahead of the G20 in London, and said they wanted a new strategic arms reduction treaty in place before the current deal runs out in December.Both men said it was time for a new start. “Over the past few years we have seen a worsening of our relationship; things were moving in the wrong direction,” said President Dimitri Medvedev. “But now we are going to start again. We are going to open a new page in Russian/American ties.” The two men said the time when their countries viewed each other as enemies is long over, and they will work together on Afghanistan, Iran and other global hotspots. President Obama also accepted an invitation to visit Moscow in July.