What's happening around the world on Saturday:

-- TOP STORIES --

+ Ukraine seeks to stave off gas cut-off

+ WHO scales up Ebola response in west Africa

+ Hopes for MH370 breakthrough as confidence in signals grows

+ IMF/World Bank hold annual meetings

KIEV/DONETSK, Ukraine: Ukraine's pro-Western leaders try to avert an imminent halt in Russian gas supplies that would also impact 18 European nations while at the same time battling a pro-Kremlin insurgency in its flashpoint east. Picture. Video. Graphic (UKRAINE-RUSSIA-POLITICS-CRISIS)

CONAKRY: The World Health Organization strengthens its team in Conakry and other international agencies step up the fight across west Africa against a deadly Ebola epidemic thought to have killed 111 in Guinea and Liberia, with new suspect cases being reported almost daily. (GUINEA-HEALTH-EBOLA)

MALAYSIA/AUSTRALIA: Full coverage of missing Malaysian Flight MH370 jet after Australia expresses confidence underwater signals are from the missing plane (MALAYSIA-CHINA-AUSTRALIA-AVIATION)

WASHINGTON: The International Monetary Fund and the World Bank hold their annual spring meetings in Washington (IMF-WORLDBANK-ECONOMY-FINANCE)

-- OTHER AGENDA ITEMS --

ABERDEEN, United Kingdom: Scotland's First Minister Alex Salmond delivers a speech at 1400 GMT to rally his Scottish National Party at its last conference before the referendum on independence in September. Picture. Video. (BRITAIN-SCOTLAND-REFERENDUM-POLITICS-SNP)

ALGIERS: Moving five-part advance package on Algeria's April 17 presidential election. Pictures. (ALGERIA-VOTE-)

- Spanish Foreign Minister Jose Manuel Garcia-Margallo y Marfien wraps up two-day visit. (ALGERIA-SPAIN-DIPLOMACY)

AUGUSTA, Georgia: The 78th Masters golf tournament takes place at Augusta National, with a crowded field that offers no clear favorite and several rising young stars -- and with Tiger Woods absent for the first time after back surgery. Through Sunday. Picture. Graphic (GOLF-MASTERS)

AUSTRALIA: Following developments after a cyclone brings destructive winds to Australia's far northeast coast (AUSTRALIA-WEATHER-CYCLONE)

BANGUI: French and African forces continue deploying to eastern Central African Republic, a stronghold of former Muslim fighters from the Seleka rebel group. Picture. Video. (CAFRICA-UNREST)

BISSAU: Candidates make final behind-the-scenes preparations with campaigning officially over on the eve of Guinea-Bissau's presidential and parliamentary elections, the first polls in the impoverished west African nation since a coup in 2012. Picture. Video. (GBISSAU-POLITICS-VOTE)

BERLIN: Myanmar's opposition leader and Nobel laureate Aung San Suu Kyi continues her visit to Germany. Press conference scheduled at 1300 GMT. Picture. Video.(GERMANY-MYANMAR-POLITICS-DEMOCRACY)

CARACAS: Monitoring developments as the Venezuelan government and opposition leaders hold talks, monitored by the Vatican and regional groups, to end two months of deadly protests. Picture. Video (VENEZUELA-POLITICS-PROTEST-TALKS)

HAVANA: French Foreign Minister Laurent Fabius visits Cuba amid efforts to revive bilateral ties just weeks after the communist island nation and the European Union agreed to start talks aimed at normalizing diplomatic relations. Picture (CUBA-FRANCE-DIPLOMACY-ECONOMY)

LONDON: Football fans hold a minute's silence before kick-off at all major matches in England to mark the 25th anniversary of the Hillsborough disaster, in which 96 Liverpool fans died. Picture.(BRITAIN-DISASTER-FBL-ENG)

LISBON: Portuguese pensioners' group holds protests from 1400 GMT in Lisbon and several cities against cuts to pensions. (PORTUGAL-POLITICS-SOCIAL)

TAIWAN: Monitoring after hundreds of demonstrators surrounded a police station before staging a sit-in outside parliament to demand resignation of police chief (TAIWAN-CHINA-POLITICS-TRADE-DEMO)