Ukraine had initially feared an IAEA visit at Zaporizhzhia would legitimise the Russian occupation of the site, before finally supporting the idea of a mission.
Ukrainian forces appear to also have used cluster munitions several times, the monitoring group said in the 2022 report on the use of the weapons around the world.
The double-digit rise on 2022 marks a sharp increase compared with the island's defence spending growth in recent years; yearly growth has been below 4% since 2017.
President Erdogan is visiting Ukraine to hold talks with President Zelenskyy and UN Secretary-General Antonio Guterres. Finding a solution to the prevailing crisis in the war-hit country is on the agenda of the meetings.
The Hambantota port is run by China, which leased it for 99 years for $1.12 billion, less than the $1.4 billion Sri Lanka paid a Chinese company to build it.