<h1>Electoral roll revision challenge drives opposition strategy as parties prepare to contest SIR and probe Operation Sindoor.</h1> Congress is finalising a coordinated parliamentary strategy for the Monsoon session to press: a legal challenge to the Election Commission's Special Intensive Revision of electoral rolls in Bihar; inquiries and accountability over Operation Sindoor and cessation of hostilities; consideration of an impeachment motion against a high court judge; scrutiny of US tariff impacts and economic issues; and opposition scrutiny of proposed amendments to nuclear legislation to permit private-sector entry.