BBC NewsEurope Issues Call for Rules; Obama Urges G-20 UnityBloombergBy Tony Czuczka and Edwin Chen April 2 (Bloomberg) -- German Chancellor Angela Merkel and French President Nicolas Sarkozy called for tighter rules on financial markets, widening a rift among leaders after President Barack Obama urged unity to counter ...Video: G20 tension begins: Obama, Sarkozy, Medvedev France 24Obama and Brown Urge United Action on World Economy New York TimesBBC News - guardian.co.uk - Reuters - Times Onlineall 934 news articles