Ex-campaign chairman Paul Manafort reportedly worked for Russian oligarch to assist President Putin.
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Vladimir Putin
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Steve Rosenberg
BBC News, Crimea
Three years after Russia annexed Crimea the region remains in a state of flux.
Read moreUS lawmakers are to seek answers on Russian involvement in last year's presidential election.
BBC Global Questions is travelling to Latvia in March to ask how this new relationship might develop and how it will impact the Baltics and beyond.
Read moreA Russian opposition activist says he has been poisoned twice by the Russian security services.
President Putin critic Vladimir Kara-Murza describes how his blood pressure dropped and he couldn't breathe, after being poisoned for the second time.
Oksana Sevastidi was given seven years for texting about Russian tanks moving to Georgia in 2008.
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Jonathan Marcus
Diplomatic correspondent
As strategic concerns deepen for both in the Middle East, the Israeli and Russian leaders have much to discuss.
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Turkey's president railed against blocks in Germany on his political campaigning for new powers.
Read moreAnalyst: Russia didn't want Trump to win
President Trump has reiterated his confidence in Attorney General Jeff Sessions who has agreed to step aside from investigations into possible Russian interference in last year's election. But will that be enough to defuse the situation? That's unlikely, says Dr Igor Sutyagin who is a senior research fellow of Russian studies with the Royal United Services Institute in London. (Pic Jeff Sessions greeting President Trump; Credit AFP)