Former Canadian navy intelligence officer Jeffrey Delisle is jailed for 20 years after pleading guilty to selling classified NATO information to Russia.
In a report from the "Financial Times", a peace plan is drafted by Ukraine and Russia. The conditions include a ceasefire and Russian withdrawal if Ukraine abandons all attempts of joining NATO and accepts limits on its armed forces.
Canada deploys a small contingent of special forces to Ukraine as part of a NATO response to deter Russian aggression. The unit is also being tasked with evacuating diplomatic personnel from the Canadian embassy in Kyiv in the event of a full-scale invasion.
The United States removes NATO ally Turkey from the Joint Strike Fighter program, following the country's acquisition of the Russian S-400 missile system. Turkey had planned to buy 100 F-35 Lightning II jets.
Soyuz MS-11 returned to Earth, landing in Kazakhstan, from the International Space Station carrying Canadian David Saint-Jacques, American Anne McClain and Russian Oleg Kononenko. The astronauts and cosmonaut spent 204 days aboard the ISS, a record for Canada.
Following his meeting at Finnish President Sauli Niinistö's residence, Russian President Vladimir Putin says that Russia would respect Finland's choice whether to join NATO, though as part of NATO's military infrastructure, Finnish Defence Forces would overnight be at the borders of the Russian Federation. Putin and Niinistö call for improved security in Baltic airspace where Russian and Western aircraft have had close encounters in recent months.
NATO announces it will hold a meeting of the NATO–Russia Council at the ambassadorial level at NATO headquarters in Brussels in the next two weeks after a two-year break since NATO cut all practical cooperation with Russia in 2014.
NATO Secretary General Jens Stoltenberg announces the invitation sent to Montenegro to join the military alliance, 16 years after the country, as part of the Federal Republic of Yugoslavia, was bombed by the alliance in the Kosovo War. Montenegro's accession would result in "retaliatory actions", according to a spokesman for Russian President Vladimir Putin.