By Crispian Balmer JERUSALEM (Reuters) - If Middle East peace talks collapse this month, lawfare rather than warfare looks likely to fill the void, with the Palestinians set to confront Israel on the diplomatic stage rather than in any popular uprising. After eight months of largely fruitless discussion aimed at achieving peace, the Israelis and Palestinians are at stalemate, prompting an increasingly glum U.S. Secretary of State John Kerry to call for a "reality check". The two sides have until the end of April to step back from the brink, with their row focused on how to proceed and not on the core issues which have stymied previous peace efforts, such as the status of Jerusalem or the fate of Palestinian refugees. President Mahmoud Abbas signed 15 conventions last week, with around 50 others being primed, including a possible application to join the International Criminal Court.