2014, Defence Minister Tomasz Siemoniak announced plans for the future acquisition of attack helicopters in response to the Ukraine crisis. On 25 November 2015, chief of National Defence Commission Michał Jach, indicated the necessity to increase the number of Polish troops from 100,000 to 150,000. However, Jach stressed that the process was complicated and should not be rushed. On June 17, 2022, after the Russian invasion of Ukraine in 2022 and the increase of the Polish armed forces to 300,000. the formation of two new mechanized divisions was announced. Participation in peacekeeping operations From the 1950s the Polish Land Forces have contributed troops to peacekeeping operations, initially the Neutral Nations Supervisory Commission in Korea. Poland contributed troops to the UNIFIL mission in Lebanon between 1982 and 2009. Poland sent a divisional headquarters and a brigade to Iraq after the 2003 Iraq war. Poland sent ten rotations of troops, manning a significant portion of Multinational Division Central-South. At its peak Poland, had 2,500 soldiers in the south of Iraq. Poland deployed about ten attack and transport helicopters as part of its force in Iraq between 2004 and 2008. These helicopters formed the Independent Air Assault Group (:pl:Samodzielna Grupa Powietrzno-Szturmowa). The division was disbanded in 2008. A Polish Military Advisory Liaison Team (MALT) stayed in Iraq until at least 2011 (see :pl:PKW Irak). One of the most recent peace keeping missions was MINURCAT in Chad and the Central African Republic, where Poland despatched troops from 2007 to 2010. Among the deployed troops were two Reconnaissance companies, a Military Gendarmerie unit, a component of the 10th Logistics Brigade, elements of the 5th Military Engineers Regiment, and three Mil Mi-17 helicopters. Equipment and modernization In 2019 a new long-term program designed to modernize the Polish Armed Forces was introduced. Over the period of the next 10 to 14 years a large portion of the equipment currently being used by the Polish Army will be either upgraded or replaced. Some elements of this program are already in place. The Polish Ministry of Defence signed a contract aiming at modernization of all Leopard 2 main battle tanks used by the Polish Army to the Leopard 2PL standard. The completion of this program is planned to take place prior to 2023. The first Leopard 2PL arrived in March 2018. The Polish Army has 1,009 tanks (2017) including 249 Leopard 2 tanks (117 Leopard 2A4, 105 Leopard 2A5,