US president urges Russian leader to ‘de-escalate’ and says West will ‘respond decisively’ if he ‘further invades’ Ukraine
- Both sides threatened consequences if Ukraine crisis is not resolved quickly
- Biden and Putin talked by telephone for 50 minutes on Thursday afternoon
- The Russian president said new sanctions would lead to the complete breakdown in relations between Washington and Moscow, said the Kremlin
- Russia has deployed almost 100,000 troops close to the border with Ukraine
- Putin says he wants guarantees that Ukraine will not be admitted to NATO
- Earlier it emerged that a US spy plane had been spotted over eastern Ukraine