Brazilian President and presidential candidate for the Workers' Party (PT), Dilma Rousseff, gestures during a campaign rally in Sao Paulo, Brazil, on October 20 2014. Rousseff and Aecio Neves will face in a run-off election next October 26.

Presidential race has turned increasingly ugly as the candidates scramble for undecided voters.

A screengrab taken on July 13, 2014 from a video released by the Nigerian Islamist extremist group Boko Haram and obtained by AFP shows the leader of the Nigerian Islamist extremist group Boko Haram, Abubakar Shekau.

At least three were killed in attack by militants on politician's home.

Brazil's presidential candidate of the Brazilian Social Democratic Party (PSDB) Aecio Neves (C) waves during a campaign rally in Brasilia, Brazil on October 8, 2014.

Brazilian Socialist Party throws support behind President Dilma Rousseff's challenger.

Thailand's Prime Minister Prayuth Chan-ocha reviews an honour guard before a military parade marking his retirement as commander in chief of the Royal Thai Army at the Chulachomklao Royal Military Academy in Nakorn Nayok on September 29, 2014.

P.M. Prayuth Chan-ocha announced contentious martial law to remain despite negative impact on tourism.

Supporters of Golden Dawn party are seen around Athens municipal amphitheater during a swearing in ceremony on August 29, 2014 in Athens, Greece.

Thousands turned out for the one-year anniversary of the killing of a rapper by a far-right party supporter. 

A Palestinian man works at a housing construction site on September 15, 2014 at the Jewish Settlement of Beitar Elit , West Bank.

Brussels condemned plans to build homes in East Jerusalem, echoing similar criticisms by the U.S.

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Nobel Laureate Eric Maskin offers a spirited examination of the political process in the United States.