A spate of billion-dollar deals for Indian banks has thrust the country’s financial sector into the global spotlight, at a time when US credit losses and trade tensions have rattled investors globally. Over the weekend, Emirates NBD Bank PJSC said it plans to invest $3 billion in RBL Bank Ltd., marking the biggest foreign investment in India’s banking sector. Earlier this month, Abu Dhabi’s International Holding Co. PJSC inked a deal to buy into Sammaan Capital Ltd. for about $1 billion, while Sumitomo Mitsui Financial Group Inc.’s banking unit in May agreed to pay $1.6 billion for 20% of Yes Bank Ltd.