NOAH BROWNING SWITZERLAND’S top court has ruled against a freeze on $900 million belonging to a jailed Angolan businessman, citing insufficient evidence for money laundering alleged by prosecutors. The ruling reverses part of one of the largest personal asset freezes in Swiss history, levied by prosecutors in 2018 and upheld by a court last year, though the precise amount due to be potentially unfrozen was not specified. Carlos Manuel de Sao Vicente was a key figure in Angola's oil industry, heading a group of companies called AAA International which sold insurance contracts to state oil company Sonangol over nearly two…