In his letter to the ex-servicemen, who are protesting against the delay over implementation of OROP since June 14 here, CPI(M) General Secretary Sitaram Yechury assured that his party would be "in solidarity both inside and outside Parliament" for realisation of their legitimate demand.
"Like so many other electoral commitments made to different democratic sections of the society (ahead of Lok Sabha polls), the Union Government has also reneged on this question.
He lauded the ex-servicemen saying the armed forces have played a crucial role in the national life and made great sacrifices for unity and territorial integrity since inception of the country's Republic.
"Understandably, the retirees from the armed forces have been legitimately agitating for recognition and implementation of OROP. The demand has attracted support on principle by the entire political spectrum of the country. We of the CPI(M) have also time and again reiterated our support for this legitimate demand," the Rajya Sabha MP said.
The BJP, however, has reneged on the promise, Yechury charged.
