Michel Martelly stepped down, leaving a deeply divided country in the hands of a disputed interim government.
Brings to an end 16 years of government majorities in the single-chamber assembly.
The region has been unable to form a goverment due to disagreements within winning coalition.
by Erin Wright Venezuela's leader digs in his heels for what could be an ugly and protracted political battle.
Mauricio Macri, due to take over as president of Argentina, inherits a host of economic problems.
Outgoing President Kirchner refused to attend handover, as her supporters rallied in Buenos Aires.
President Nicolas Maduro's popularity is up, but perhaps not by enough, estimate pollsters.
Police fired teargas to disperse protesters who denounced the first round of election as fraudulent.
Mauricio Macri has been confirmed as the winner in Argentina's presidential elections.
New Canadian PM Justin Trudeau was the center of attention at meetings in Turkey and Manila.