Russian ruble weakens to 1-year low amid escalating tensions

​​​​​​​ANKARA

The Russian ruble weakened Tuesday to its lowest in more than one year as Moscow reacted to US President Joe Biden’s approval of Ukraine using American-supplied long-range Army Tactical Missile Systems (ATACMS) to hit Russian territory.

The ruble fell 0.82% to 100.5 per dollar -- its lowest since last October.

Russian President Vladimir Putin signed a decree Tuesday approving Moscow's updated nuclear doctrine.

The document, published on the government website, said aggression against Russia and its allies by a non-nuclear country with the support of a nuclear state will be considered a joint attack.