Croatia extradited a former Yugoslav spy chief to Germany on Thursday to face charges for the 1983 murder of a dissident on German soil.

Zdravko Mustac, accompanied by German police, left the Croatian capital on a regular Lufthansa flight for Munich, the state-run HINA news agency reported.

Italy's former premier and billionaire tycoon Silvio Berlusconi said Thursday he was happy to do his community service in a center for disabled and elderly people and would do his best to be helpful.

"The court has obliged me to dedicate part of my time to people in need. I'm actually pleased because in my life I have always helped people," Berlusconi told journalists at a press conference in Rome to launch his center-right party's EU election campaign.

Gunmen stormed a U.N. base in South Sudan Thursday, wounding dozens of civilians from a rival tribe in an "unprovoked" attack before peacekeepers fought them off, the U.N. said.

The top U.N. aid official in South Sudan, Toby Lanzer, said he was "outraged" by the assault in the war-ravaged town of Bor, in which two peacekeepers were also wounded.

Russian President Vladimir Putin exuded self-confidence as he fielded four hours of questions in his traditional phone-in marathon, keeping open Russia's diplomatic and military options on the Ukraine crisis.

Putin basked in the glory of Russia's lightning takeover of Crimea from Ukraine last month, sitting impassively as dozens of locals in the Crimean port of Sevastopol chanted "Thank you!" in a live link-up.

The U.N. refugee agency said Thursday it was "disturbed by reports of harassment and other abuses" in a Kenyan counter-terrorism operation targeting Somalis that has seen thousands arrested and scores expelled.

Conditions in a sports stadium being used as a giant holding pen and in police stations are "overcrowded and sanitary conditions are inadequate," the UNHCR said in a statement, adding that 82 Somalis had been deported back to their war-torn country.

The United Nations expressed "regret" over Burundi's decision Thursday to throw a senior U.N. official out of the country following a damning report alleging guns were being distributed ahead of elections.

The leaked internal U.N. report has raised fears of a return to civil war and the government has been warned about the risk, said Stephane Dujarric, a spokesman for U.N. Secretary General Ban Ki-moon.

Ukraine has banned entry to its territory for all Russian males aged between 16-60, the Russian flagship carrier Aeroflot said Thursday in a warning to passengers.

"In line with an official order received by the company, all Russian male citizens aged from 16-60 will be refused entry into Ukraine," Aeroflot said, adding that exceptions would only be made in extreme cases.

At least seven people were killed in ethnic and religious violence in eastern Nigeria's Taraba state, police said Thursday, with local residents putting the toll at 20.

Violence erupted in the town of Wukari on Tuesday through Wednesday when Christian Jukun gunmen attacked their Muslim Hausa-Fulani neighbors in a reprisal attack following fighting in a nearby village, state police spokesman Joseph Kwaji told Agence France Presse.

A Nigerian school principal on Thursday denied military reports that most of the girls kidnapped by Islamist gunmen were now safe, as parents continued a desperate search for 115 children still held captive.

A defense ministry spokesman, Chris Olukolade, claimed on Wednesday that all but eight of the 129 girls kidnapped from the Government Girls Secondary School in Chibok area of Borno state earlier in the week were now safe, citing the school's principal.

Russian President Vladimir Putin on Thursday accused NATO chief Anders Fogh Rasmussen of secretly recording and then leaking to the media a private conversation between them when Rasmussen was Danish prime minister.

As NATO secretary general, Rasmussen has used hawkish rhetoric calling for Moscow to "de-escalate" the crisis in Ukraine and pull back thousands of troops massed on the border.