U.S. President Donald Trump and his Russian counterpart Vladimir Putin were still "maybes" for what could be the first direct peace talks between Moscow and Kyiv in years after the Kremlin on Wednesday held off disclosing who would represent Russia.

The talks have taken place in the warring capitals of Moscow and Kyiv, from Washington and Riyadh, Saudi Arabia, to countries across Europe. Now, all eyes are finally turning to Istanbul to seek an end to Russia's 3-year-old,