Final answer:
The consequences of the failure of Wilson's plans may include prolonged conflict, increased international cooperation, and strengthened diplomatic relations.
Step-by-step explanation:
The failure of Wilson's plans may have several consequences moving forward. First, it could lead to prolonged conflict as unresolved grievances between countries may escalate. Second, the failure may result in increased international cooperation as countries seek alternative ways to address diplomatic issues. Lastly, the failure of Wilson's plans could also strengthen diplomatic relations between countries as they work together to find solutions outside of the proposed League of Nations.