WASHINGTON, Nov 9 - America's top general estimated on Wednesday that Russia's military had seen more than 100,000 of its soldiers killed and wounded in Ukraine, and added Kyiv's armed forces "probably" suffered a similar level of casualties in the war, Reuters reported.

The remarks by Mark Milley, U.S. Chairman of the Joint Chiefs of Staff, offer the highest U.S. estimate of casualties to date in the nearly nine-month-old conflict, and came as Ukraine and Russia face a potential winter lull in fighting that experts say could offer an opportunity for some kind of negotiations.