23 Ukraine troops killed; president says "militants will pay"
19 Ukraine servicemen killed in rocket attack; president says "everybody will get what is coming to them"
War in Ukraine
Ukraine rebels bracing for last stand in Donetsk?
3 bridges leading into big eastern city, where rebels ousted from nearby towns have regrouped, blown up amid gov't offensive
After loss, Ukraine rebels vow to regroup and fight on
Ukraine military succeeded in driving pro-Russian insurgents from Slavyansk, who have begun massing in stronghold of Donetsk
Ukraine claims significant victory in rebel stronghold
Ukrainian forces seize rebel headquarters in Slavyansk, forcing pro-Russian militants to flee, though they vow to regroup and fight on
Why hasn't Russia unleashed a cyber attack on Ukraine?
A Russian cyber assault that cripples Kiev's military and energy systems is believed feasible - but remains unexploited for now
Deadly attack on Ukraine border post
Fresh violence on border with Russia after Ukraine's cease-fire expires, separatists reject call to lay down arms
Ukraine's president says cease-fire is over
President Petro Poroshenko says Ukrainian forces will go on the offensive against pro-Russian separatists in east
Ukraine president meets with Putin, European leaders over conflict
Petro Poroshenko is seeking a solution to the conflict, which has intensified despite a ceasefire
Ukraine signs historic trade pact with EU, irking Russia
Ukraine's new president calls it "maybe the most important day for my country" since its independence from the Soviet Union
Putin's permission to invade Ukraine cancelled
At his request, Russian legislature cancels resolution allowing use of military force in Ukraine as tensions ease
Putin withdraws request to use force in Ukraine
Ukraine leader calls Putin's move a "practical step" after pro-Russia rebels say they'll respect cease-fire
Ukraine rebels promise to abide by cease-fire
President Petro Poroshenko's peace plan gets off to a successful start; rebels also promise to release kidnapped European observers
U.S. issues new sanctions against 7 Ukraine rebels
Sanctions come as the U.S. points to new evidence that Russia is amassing new weapons and munitions closer to its border with Ukraine
Ukraine's peace plan can't come soon enough
Pro-Russia forces kill 7 Ukrainian troops in east as violence escalates ahead of president's expected peace proposal
Russia's "regrettable step backward" on Ukraine
As tensions in eastern Ukraine mount, NATO chief says Moscow has sent a few thousand soldiers back to border area
"A climate of lawlessness prevails"
U.N. reports says eastern Ukraine under "a reign of fear" as killings, torture, and abductions by "armed groups" rise dramatically
2 Russian journalists killed in eastern Ukraine
Correspondent and sound engineer for Russian state-owned TV channel die after being hit by mortar fire, TV network reports
Ukraine leader to propose ceasefire with separatists
President Poroshenko says he's willing to negotiate a plan for peace with pro-Russian separatists in east of country
Russia cuts gas supply to Ukraine
Ukraine passed the payment deadline for gas as fighting continues in east between Kiev and pro-Russian insurgents
Ukraine leader gives little sign of quick end to conflict
Newly elected president calls for dialogue with country's east but says he won't talk with "gangsters and killers"
Putin: "Bloodshed in eastern Ukraine must be stopped immediately"
Russia's Vladimir Putin not only shakes hands with Ukraine's incoming leader on sidelines of D-Day events, but talks with him
Obama, Putin meet for first time since Ukraine crisis
The two leaders had their first face-to-face chat since the crisis began at a D-Day commemoration lunch in France
Obama, Cameron set new Russia sanctions deadline
Leaders spell out new demands Russia must meet or face further sanctions
Obama meets Ukraine leader, and brings gifts
After 1st meeting with President-elect Poroshenko, Obama calls him "wise selection" to usher in democracy, offers new military help
Russia's absence looms over G-7 meeting
As Russia tones down its aggression in Ukraine, the U.S. and Europe must determine how to respond to Putin's next moves
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