In a move set to reshape the landscape of the U.S. financial sector, Capital One (COF) , backed by Warren Buffett, announces its plans to acquire Discover Financial Services. The all-stock transaction, valued at $35.3 billion, aims to establish a global payment giant. The deal, if approved by regulators, would create the sixth-largest U.S. bank by assets and a U.S. credit card behemoth that would compete with rivals JPMorgan Chase and Citigroup, per Reuters.Enhancing Competitiveness in Global PaymentsDespit ...