Mauritanians are voting for the first time since the country gained independence from France in 1960.
The 62-year-old is standing down after serving the maximum two five-year elected terms.
However the status quo is likely to prevail when a new leader is elected.
Abdel Aziz has expressed his support for Mohamed Ould Ghazouani, who is a former general and defense minister.
Israeli attacks on Gaza killed 60 people in 24 hours
Israeli occupation forces committed multiple massacres against families in the Gaza Strip over the past 24 hours, resulting in the killing of at least 60 Palestinians and the injury of 162 others, according to medical reports.
Trump fires National Security Agency director
U.S. President Donald Trump fired General Timothy Haugh as director of the National Security Agency on Thursday, according to two officials familiar with the decision, and congressional Democrats denounced the removal of the nonpartisan official from a top security post.
Israel steps up Syria strikes, says Turkey aims for 'protectorate'
Israel stepped up airstrikes on Syria, declaring the attacks a warning to the new rulers in Damascus as it accused their ally Turkey of trying to turn the country into a Turkish protectorate.
US sending Israel 20,000 assault rifles that Biden delayed
The Trump administration moved forward with the sale of more than 20,000 US-made assault rifles to Israel last month, according to a document seen by Reuters, pushing ahead with a sale that the administration of former president Joe Biden had delayed.
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Meet Harnidh Kaur, one of the most youngest followed on social media
