The minister's visit indicates Germany and the West's increasing concern over Ukraine after controversial referendums on independence held Sunday in the country's east.
Separatists in eastern Ukraine say that Sunday's referendums strongly favored self-rule for two regions. But questions remain over the validity of a vote that Kiev has strongly rejected.
A separatist referendum went forward in much of eastern Ukraine today over the objections of Kiev and many western governments, including the US.
Putin praised Russia's 'iron will, fearlessness and steadfast courage' in World War II. He made only oblique references to the current crisis in Ukraine – but then headed to Sevastopol.
The US, Britain, China, and France have all offered help. But they are limited in what they can do on the ground, and Nigeria may hesitate to appear too welcoming of such aid.
Vietnam disputes China's right to drill for oil in waters that lie within Vietnam's exclusive economic zone. The Philippines has detained Chinese fishermen accused of collecting protected turtles.
Boko Haram gets lost in translation. Oh, and the word 'boko' isn't derived from the word 'book.'
Boko Haram threatens to sell hundreds of girls it kidnapped last month. The World Economic Forum on Africa opens in Abuja Wednesday, drawing even more global attention to the crisis.
The US says it is shifting its policy over when to keep cyber-vulnerabilities such as Heartbleed secret – to be exploited by government spies only – and when to disclose and fix them.
Ukraine's interior minister announced it has sent a new police unit, involving 'civilian activists,' to bolster security in Odessa after a deadly weekend that left at least 40 dead.
Outgunned and surrounded, Syria's rebels are withdrawing from Homs under a 24-hour cease-fire. Claiming complete control of the city would be a significant victory for Damascus.
Ukrainian troops aim to dislodge pro-Russian militants in Slovyansk. Russian warnings about military action against the east are boosting fears that it might invade.
Michele Dunne, a former administration official, argues that it may be.
Is it wise to let concern about terrorism trump all?
More than 200 girls were kidnapped from their school in northeastern Nigeria earlier this month. The region faces a long-running insurgency by Islamist militant group, Boko Haram.
Secretary of State John Kerry talks tough on mass death sentences in Egypt. But US actions signal a far different take on Egypt's authoritarian about-turn.
Ukraine's acting president asked for help from regional governors to stop upheaval in the east from spreading, as pro-Russia militants seized buildings in Horlivka, a city near Donetsk.
The European Union said it would freeze assets of 15 military and political officials in Russia and Ukraine. The move comes as tensions escalate in eastern Ukraine.
Hacking and cyber-spying on US energy firms over the past year point to Iran's growing capabilities, a cyber-security firm says. China and Russia are more serious threats, but Iran is closing the gap.
President Obama said the measures are aimed at 'changing Putin's calculus' on Ukraine, and that further 'Russian aggression' could trigger more sanctions.