"Earlier also we had given a one-day strike call against the policies of the Centre. But that strike call didn't send a strong message to them," Yechury said.
"So now a two-day strike call has been given to deliver a stronger message," Yechury said on the sidelines of a programme here.
Trade unions CITU, INTUC, AITUC, BMS and Left-backed banking sector unions have jointly called the country-wide general strike opposing financial sector reforms and allowing FDI in retail on February 20 and 21.
