FOR the BJP, it's a Catch-22 situation. A government critically dependent on the support of regional parties finds itself with no option but to hit them with what hurts most, the psychological brahmastra of Article 356. In satisfying one ally, the Samata Party, and the BJP cadres in Bihar, it risks alienating all the rest. Judging by the poor attendance at the meeting of BJP allies called by home minister L.K. Advani last week, the government will have a hard time piloting a proclamation of president's rule through the Lok Sabha, much less the Rajya Sabha, where it does not enjoy a majority.