New Delhi, March 11 -- Opposition leaders on Wednesday slammed the Centre over the ongoing LPG constraint, triggered by the conflict in West Asia. West Bengal chief minister Mamata Banerjee alleged that the Union government imposed restrictions on LPG supply without first ensuring adequate reserves of cooking gas and petroleum products in the country. She said the central government should have ensured sufficient reserves of LPG, oil and gas before announcing "measures that triggered anxiety among consumers". "The central government should have first ensured enough reserves of LPG, oil and gas. Without that, they imposed restrictions sans proper planning to tackle the situation," she said. Kerala Chief Minister Pinarayi Vijayan sought Prime...