During session meant to avert conflict, Kyiv's envoy informed Security Council that Russia was bombing his country, told his Moscow counterpart war criminals 'go straight to hell'

As Putin begins invasion with assault on Ukrainian cities, he warns world to not interfere; US, NATO vow response, expected to come in form of sanctions

US president says he will announce new 'consequences' for Putin Thursday afternoon after huddling with other G7 members

Ukrainian draft proposal declaring Russia in violation of UN Charter and international law doomed to fail thanks to Kremlin's veto

Zelensky makes emotional appeal for peace in Russian as Pentagon says soldiers 'are ready to go right now'; pictures show major tank and troop buildup near Kharkiv

Kremlin says separatists want Russian soldiers to repel 'Ukrainian aggression,' in possibly pretext for incursion; US official says Putin's troops as ready for assault as possible

PM Johnson tells parliament move is due to Russia's increasingly 'threatening behavior,' seeks to revoke broadcast license of Kremlin-backed RT channel

Ukrainian defense, foreign ministries' websites taken down in attack, as predicted by US officials ahead of full-blown invasion, to include airstrikes and push to Kyiv

Diplomacy correspondent Lazar Berman proposes that the Iran nuclear deal and Russian tension are tied; Health reporter Nathan Jeffay brings us promising med-tech research

Reservists between the ages of 18 and 60 called up for a period of up to one year and would face 'criminal penalties' for not showing up