There will be no big war in the upcoming 2019, although local small confrontations are unavoidable in some of the regions as followings.
1. Eastern Europe - in the eastern border of Ukraine with Russia;
2. Middle East - ISIS would still be active in some areas, such as Iraq, Syria, South Sudan;
3. South America - refugees problems will affect the southern border of the States with Mexico;
4. President Donald J. Trump would be troubled if the Mueller's investigation provides unfavorable evidence for the involvement of Russia in the 2016 US election, that will make more people supporting President Trump unhappy and deepen the division of the nation since he took the office in 2017 January;
5. Successful launching of new advanced missiles by Russia will trigger a new around military race worldwide, because it breaks the balance of superpowers between the US and Russia;
6. Eastern Asia - North Korea is likely to resume its strategic military test to make it equipped with its strong armies, including ballistic missiles that are able to deliver its nuke warheads over 10000 km cross the ocean. If this test takes place again in 2019, that will disturb the current peace;
7. Turkey troops have been sent to the northern Syria to fight the Turks rebels, that may raise more severer problems in the region.