Update(10:45ET): Following what were generally upbeat weekend assessments of how Russia-Ukraine ceasefire talks are going, the fourth round of talks have taken a "pause" after a reported more than five hours in negotiations.

Ukraine's top negotiator called it a "technical pause" until their planned resumption on Tuesday, but confirmed that "negotiations continue". During Monday's talks President Zelensky had separately announced he plans to give a virtual address to US Congress on Wednesday, which will start in the morning (US time). It will mark his second time to address both the House and Senate together since the commencement of the war on Feb.24.

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