Russia's President Vladimir Putin has since said he agrees with the idea of a ceasefire in Ukraine, but added that "questions ...

The Trump administration, however, starts from the sixth, outside layer. It sees the Ukraine war as a minor front in a ...

We end the week with the latest on Ukraine and the US proposal for a 30-day ceasefire with Russia ahead of a busy weekend of ...

All the latest breaking news on United States. Browse ibtimes archives of photos, videos and articles on United States.

Nature Materials is a monthly multi-disciplinary journal aimed at bringing together cutting-edge research across the entire spectrum of materials science and engineering. Materials research is a ...