In a couple of scathing tweets, Modi also blamed the Congress' sympathy for the Left parties for the rise of Maoist insurgency in a number of states across the country.
"Two days after the BJP registered spectacular victories in three north-eastern states, Rahul Gandhi finally accepted his defeat and declared his unconditional support to regional parties the SP and the BSP in Lok Sabha by-polls in Uttar Pradesh," Sushil, also a senior BJP leader, said.
Sushil was referring to the developments in the Bihar Congress last week when former BPCC chief Ashok Choudhary, along with three other MLCs, quit the party and joined Chief Minister Nitish Kumar's JD(U).
Sushil also took potshots at senior Congress leader and former Union minister Jairam Ramesh for having said "demise of the Left will be a disaster for India".
"Leftists have promoted separatist forces in centres of higher learning like the JNU, thereby striking at the roots of nationalism. It is because of the Congress' sympathy towards the Left that six states, including Bihar, witnessed the naxal insurgency," he alleged.
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