"We condemn, in the strongest terms, Russia's involvement in eastern Ukraine and its purported annexation of Crimea," Haley said Tuesday at a UN Security Council meeting on the conflict, during which representatives were briefed on recent instability in the region, Censor.NET reportes citing CNN.
The diplomat promissed the U.S. sanctions will remain in place until Russia withdraws from the long-simmering conflict, which she called "a textbook example of the direct violation of the sovereignty of one (UN) member state by another member state."
Haley further accused Russia of creating "a catastrophe of suffering," by supporting separatist groups and violating its obligations under an international cease fire agreement.
"Despite its transparent denials," said Haley, "there is no doubt Russia is driving the Ukrainian conflict."
She also offered her support to Australia and the Netherlands, after those countries asked Russia to acknowledge its role in the downing of Malaysia Airlines Flight 17 (MH-17), which was shot down over eastern Ukraine in 2014.
An investigative team determined last week that the missile which brought down the passenger plane was fired from a launcher belonging to Russia's 53rd anti-aircraft missile brigade.
On April 6, the Office of Foreign Assets Control OFAC added 15 Russian entities and 24 nationals into the Ukraine Related Sanctions list.
As a result, Russia's richest oligarchs lost $12 bln in one day, Forbes wrote.
The sanctions also weakened the ruble as Russia's stock market saw the deepest drop since March 2014.