The attack targeting police officers on Thursday in Paris' Champs-Elysees avenue may provoke "a burst of citizen mobilization and revive the spirit of January 2015," Madani Cheurfa, secretary-general of the Political Research Center of Paris Institute of Political Studies (Sciences Po) has said.

Sunday's presidential poll in France will have a spillover effect on Italian politics as the country is also heading to general elections within months, said analysts.

A Thursday attack in the French capital city Paris that killed one police officer and injured two casts new shadows on the security situation just three days before the French presidential election.

More female leadership is what we need in the 21st century, Nuria Chinchilla, the director of the International Center of Work and Family of the IESE Business School, said in an interview with Xinhua.

The operation of St. Petersburg subway has been fully restored after the explosion on Monday that killed at least 11 people and injured 45 others, the governor's administrations said in a statement Tuesday.