When the Rajapaksa brothers returned to the centre stage of Sri Lankan politics with a bang, alarm bells rang out in South Block. There was growing concern that the island nation, a stone’s throw away from India’s southern state of Tamil Nadu, would once again tilt towards China. During former president Mahinda Rajapaksa’s second term in office Colombo allowed China to freely spread itself out in Sri Lanka. What is more, in 2014, a Chinese military submarine and a PLA warship was allowed to dock in Colombo harbour, raising security concerns in Delhi.