The president and the pontiff have disagreed in the past on numerous issues.
A court ruled that the Taiwan's current code was a violation of two articles of the constitution of the Republic of China.
Philippine President Rodrigo Duterte placed 22 million people under military rule as ISIS-linked militants battled troops in a southern city.
Salman Abedi, who investigators say was responsible for the carnage, had ties to al Qaeda and had received terrorist training abroad, a U.S. intelligence official told NBC News.
Ariana Grande's fans are predominantly teens and young girls, and many had gone to the venue for a night of fun that turned into a scene of carnage.