National unity government disasters or wars, that the two parties have briefly "rallied around the President." Such instances include the attack on Pearl Harbor, the assassination of John F. Kennedy, and the September 11 attacks, all of which not only had a worldwide effect, but preceded a massive spike in the approval rating of the sitting President. The 2008–2009 Zimbabwean political negotiations between the opposition Movement for Democratic Change (led by Morgan Tsvangirai), its small splinter group, the Movement for Democratic Change – Mutambara (led by Arthur Mutambara), and the ruling Zimbabwe African National Union – Patriotic Front (led by Robert Mugabe) created
Robert Mugabe Zimbabwe's economic problems. British prime minister Tony Blair had an antagonistic relationship with Mugabe and allegedly planned regime change in Zimbabwe in the early 2000s as pressure intensified for Mugabe to step down. British General Charles Guthrie, the Chief of the Defence Staff, revealed in 2007 that he and Blair had discussed the invasion of Zimbabwe. However, Guthrie advised against military action: "Hold hard, you'll make it worse." In 2013, South African President Thabo Mbeki said that Blair had also pressured South Africa to join in a "regime change scheme, even to the point of using military force" in Zimbabwe.