In response to the shootings, Ardern announced her government's intention to introduce stronger firearms regulations.  She said that the attack had exposed a range of weaknesses in New Zealand's gun laws.  Announcing a period of national mourning, Ardern was the first signatory of a national condolence book that she opened in the capital, Wellington.  She also travelled to Christchurch to meet first responders and families of the victims.  Ardern received international praise for her response to the shootings, and a photograph of her hugging a member of the Christchurch Muslim community with the word "peace" in English and Arabic was projected onto the Burj Khalifa, the world's tallest building.  A 25 meter mural of this photograph was unveiled in May 2019.  When New Zealand started a royal commission to investigate the attacks, she stated, “It will look at the actions of SIS (Security Intelligence Service), the GCSB (Government Communications Security Bureau), police, customs, immigration and any other relevant government departments or agencies”.