US President Donald Trump’s decision to waive threatened tariffs of up to 100% on countries buying Russian oil offers India temporary relief but leaves New Delhi exposed to renewed pressure from Washington, the Global Trade Research Initiative (GTRI) said on Saturday. The think tank said the waiver could be withdrawn at any time, allowing the US to revive the tariff threat and use it as leverage in bilateral trade negotiations. It urged India to protect its energy security, purchase oil on commercial terms and avoid making permanent trade concessions in return for temporary relief.