Launching a scathing attack at the Congress, Nirmala Sitharaman today accused the Congress of not taking any stringent action against his veteran leader P Chidambaram for failing to disclose foreign assets to the I-T department. Calling it the “Nawaz Sharif moment” of the Congress Party, Union Defence Minister asked whether party president Rahul Gandhi would investigate the matter. She also assured that the strict actions will be taken by the government in the near future against defaulters involving in black money menace.