Soldier on duty looks on as he stands guard at entrance at World World II war memorial during event marking Remembrance Day in ColomboWith the aid of Frank Jack Daniel COLOMBO (Reuters) – Allegations of abuses in opposition to ethnic minority Tamils in Sri Lanka 4 years after the army received a civil battle against separatist rebels have put force on the federal government as it prepares to host a Commonwealth summit. Canadian Prime Minister Stephen Harper mentioned weeks ago he was skipping the assembly because of concern about human rights and his Indian counterpart, Manmohan Singh, has also pulled out. British Top Minister David Cameron says he’ll ask "serious questions" and demand an investigation into allegations of war crimes. The federal government says Sri Lanka is on the trail to reconciliation, helped by fast financial growth.