<h1>President urges NATO stop buying Russian oil and proposes 50-100% tariffs tied to China's Russian oil purchases (Sections 301, 232)</h1> The U.S. president publicly urged NATO members to cease purchasing Russian oil and proposed unilateral tariffs of 50-100% on Chinese imports tied to China's purchases of Russian petroleum, framing the measures as leverage to end the Russia-Ukraine war; he noted an existing 25% U.S. import tax applied to another country for similar conduct. Legally, such executive tariff actions implicate U.S. trade statute authority and may trigger congressional oversight or require legislation to sustain broader tariffs, raise potential WTO and alliance-friction issues, and intersect with sanctions, national-security and foreign-affairs doctrines.