The Kremlin leader allegedly revealed the news during a closed-door speech on Thursday with top Russian ambassadors.
Natalya Poklonskaya was commenting on unconfirmed reports that alleged Trump said Crimea was part of Russia because everyone there speaks Russian.
The U.S. State Department demanded an end to the hostilities as the conflict entered its fifth year.
Arkady Babchenko left Russia in 2017 fearing for his life.
Ukraine and Russia’s relationship has reached its lowest point since the collapse of the Soviet Union.
Sexual assaults are common on all sides of the war, and few perpetrators are being punished.
The attack was the second attempt this year from Russia’s mostly Muslim Chechnya region to slay the man that Russia has accused of plotting to kill President Vladimir Putin.
The Ratnik-3 is a future infantry combat suit with a built-in exoskeleton, state-of-the-art reconnaissance and weaponry and, now, a nuclear-resistant watch.
The 68-page "Russian New Generation Warfare Handbook" envisions clashes between U.S. and Russian forces, especially in Ukraine.
Moscow claims that any Russian military hardware was looted by rebels from Ukrainian government depots.
Ukraine and Russia face off in Twitter rematch with South Park gif, after Simpsons meme.
"There was nothing spontaneous. Everything was organized and each fiddler played his role." Military sources reveal how defections helped Russia take Crimea.
Despite broad support from Russia, insurgents in eastern Ukraine sometimes bewilder Moscow, and the Kremlin claims it is happening again.
Ukraine's president has dismissed the move as coming straight from the Kremlin.
It is not the first time Russians have turned up in Ukraine under suspicious circumstances.
Russian lawmaker Vyacheslav Alekseyevich Nikonov said nuclear weapons would be necessary in the event of a U.S. or NATO invasion of Crimea or eastern Ukraine.
The Ukraine had by far the most mine explosions and casualties in the world in 2016 due to ongoing conflict in its eastern region.
U.S. paramedic Joseph Stone is the first casualty of an international monitoring mission in eastern Ukraine.
Donald Trump and his administration have made conflicting statements on the war in Ukraine since October last year.
Fighting flares in Avdiivka as electricity and water links fail for its trapped residents.
Meanwhile Russian interest in east Ukraine has dwindled to a near three-year low.
The Odessa governor's anti-corruption campaign has seen him criticize government officials.
International observers claim hostilities have increased by 40 percent in a week.
President Petro Poroshenko warned that Russian-backed separatists have a vast military stockpile.
Russian-born militant "Motorola" was killed in a suspicious elevator blast in Donetsk.
The Russian leader appeared to make a rare admission on Ukraine.