The focus of our work is Tony Blair in the context of the peace process between Israel and the Palestinians. We seek to investigate Tony Blair's cognitive attitude towards the Middle East peace process within two institutional contexts: first, as British Prime Minister (1997-2007) and, subsequently, as the Middle East Quartet's Envoy (from 2007 until today). In general terms, we intend to undertake insight into Tony Blair's conceptual understanding of the causes of the conflict, his perception about the intentions and capabilities of the parties, as well his strategic beliefs about the most optimal approaches to the peaceful settlement. Therefore, the analytic goal of the given study is to trace how Tony Blair's strategic conception of the Israeli-Palestinian peace process evolving with the change of his institutional context.