The Group of Seven industrialized nations said Friday they are ready to take further steps to hold Russia accountable for its attack on Ukraine, as they announced a new set of sanctions including depriving Moscow of its trade benefits. The G-7 — Britain, Canada, France, Germany, Italy, Japan and the United States, plus the European Union — will also work to preserve the stability of energy markets as well as ensure food security globally, the group said in a joint statement as concerns grow over supply disruptions stemming from the invasion.