Diplomatic ties between the U.S. and Cuba progressed in July when President Barack Obama announced he would ease trade and travel restrictions, but Castro wants more.
Nigerian President Muhammadu Buhari will make history as the first Nigerian leader in 16 years to address the U.N. General Assembly on the opening day of General Debate.
The Chinese president also talked about global peace, development and international order during his speech Monday at the U.N. General Assembly.
The Russian president's remarks Monday were his first before the U.N. General Assembly in a decade.
President Barack Obama spoke about the challenges facing the world during his speech at the United Nations General Assembly meeting Monday -- calling for diplomacy and unity.
She criticized Chinese President Xi Jinping for China's women's rights record, but she has come under fire for similar issues.
Chinese officials have stressed before that countries should respect each other's sovereignty.
Each annual general assembly provides a forum for discussion of a range of international issues that fall under the umbrella of the U.N. Charter.
With conflicts in both Syria and Ukraine, Russian President Vladimir Putin's remarks could be important to watch.
At a speech in California Sunday, Indian Prime Minister Narendra Modi picked out terrorism and global warming as the two main challenges to humanity.
The United Nations also announced International Peace Day, to remind the world of the importance of peace.
It will be the second meeting between the two leaders since they announced a detente after more than half a century of animosity between the former Cold War foes.
“As countries that are as vast as continents, we have this very important greenhouse gas emissions target," President Dilma Rousseff says.
In spite of efforts to stop foreign nationals from joining ISIS, people are still joining the terrorist militia.
Iranian President Hassan Rouhani said on Friday that ties with the United States had improved, although there was "still a long road to travel" before the two estranged nations could have normal relations.
Starting Friday, the United Nations will discuss the 17 new ambitious development goals that include ending poverty and taking action to combat climate change.
“Any harm done to the environment, therefore, is harm done to humanity,” Francis said.
Watch Pope Francis address world leaders at the United Nations General Assembly in New York City.
While the pope told Congress that climate change is an urgent problem, Trump brushed the issue aside.
More than half of the refugees in Europe are Syrians fleeing an escalating civil war in their home country.
European Union officials will provide emergency funding for the refugee crisis, but then it's up to national leaders to make tough financial decisions.
The Russia has vetoed four U.N. Security Council resolutions on Syria in four years.