U.S. decision to sanction Russia's two largest oil companies threatens to disrupt the energy lifeline of India and China, industry experts said.

Russia, the world's second largest oil exporter, is weighing how to respond to U.S. sanctions on top oil firms Rosneft and Lukoil and the prospect of lower sales to its biggest buyer, India.

KALMYKIA (RUSSIA)- Over 50,000 devotees, many of whom waited in queues stretching up to one kilometer, have paid homage at a monastery here which is hosting an exposition of India’s Sacred Relics of Lord Buddha, an official said. The exposition from India has drawn an unprecedented response in the Republic of Kalmykia, Russia, he said.

U.S. trade talks collapsed earlier this year with New Delhi not agreeing to widen market access to its vast agricultural and dairy sectors.

Trump reiterated that Indian Prime Minister Narendra Modi told him India will stop buying Russian oil, while warning that New Delhi would continue paying "massive" tariffs if it did not do so

By Dmitry Antonov, Pavel Polityuk and Simon Johnson MOSCOW/KYIV/LINKOPING, Sweden (Reuters) -Russia said on Wednesday it had conducted a major training exercise involving nuclear arms and the U.S. appeared poised to announce new sanctions against Moscow,