North Korea’s nuclear quest

Since the U.S. removed tactical nuclear weapons from its bases in
South Korea in 1991, five U.S. presidents have offered inducements to North Korea to forgo its quest for nuclear weapons

George H.W. Bush                                Kim Il-sung 1984-1994
90 
Number of missile launches (full flight tests only)
First medium-range missile test 
1991: President George H.W. Bush withdraws nuclear weapons from South Korea
Kim Jong-il 1994-2011
1994: Signs Agreed Framework with U.S. to freeze nuclear programme

Bill Clinton
95
1999: Agrees to freeze testing long-range missiles

George W. Bush 
00- 05
2002: In contravention of Agreed Framework, North Korea is discovered to be pursuing uranium enrichment and plutonium reprocessing technologies
2003: Withdraws from Nuclear Non-Proliferation Treaty
2006: Carries out first underground nuclear test
2009: Expels UN inspectors. 2nd nuclear test 

Barack Obama
10-15
2010: North sinks South Korean warship
Kim Jong-un 2011-present 
2013: 3rd nuclear test
2016: 4th, 5th nuclear tests

Donald Trump
18
2017: 6th nuclear test
Jun 12, 2018: Summit between Donald Trump and Kim Jong-un               



Source: Center for Strategic & International Studies Pictures: Associated Press
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