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But last night's outbursts give a very different picture, and this morning you'd be hard pushed to find an optimist in Westminster.

“The optimist in me would like to see him keep the promise of federal aid, but the realist in me doesn’t really trust it,” he said.

"He was a super optimist, every time I was with him," he said.

Speaking about cooperation between the UK and the EU, Tusk said he hoped for a "Breturn", adding: "I'd rather be an optimist and harbour these dreams in my heart - sometimes they come true in politics."

With Kotb’s departure, daytime television is saying goodbye to its stalwart optimist, and it’s going to be a rocky road without her to navigate the terrain.