PARIS (Reuters) -French insurer Axa on Thursday posted a 2% rise in revenue, with strength in its health and casualty insurance business offsetting weakness in savings. Europe’s second-biggest insurer, behind Allianz, said it was confident of reaching its financial targets for 2023 despite geopolitical tensions linked to the Russia-Ukraine conflict. “We currently expect the net underwriting losses from the crisis to be akin to a mid-sized natural catastrophe event,” Axa’s CFO Alban de Mailly Nesle told reporters but declined to elaborate. The company in February raised its goals saying it was …