Answer: Dissolution of the union is not a form of presidential intervention.
Explanation: Dissolution of the union happens to be one area where the president has no authority to interfere by himself, this decision can be done only with the agreement of the parliament and the Prime Minister. Presidents do the intervention normally to stabilize the situation in their country or to boost their support. Some examples from history can be the following:
1. In October 1971 President Nixon invoked the back-to-work provisions of the Taft-Hartley Act to end a dock strike that tied up cargo on both coasts;
2. In August 1981 President Reagan fired striking air traffic controllers after they refused his order to return to work;
3. In June 1991 President Bush signed legislation to halt a nationwide rail shutdown and created a binding arbitration process to resolve the disputes.