The National Rally for Reform and Development (Arabic: التجمع الوطني للإصلاح و التنمية, romanized: at-tajammuʿ al-waṭani lil iṣlāḥ wat-tanmiya, French: Rassemblement National pour la Réforme et le Développement), often known by its shortened Arabic name Tewassoul (Arabic: تواصل, romanized: Tawāṣṣul) or by the abbreviation of its French name (RNRD), is an Islamist political party in Mauritania.

[3] The roots of Tewassoul go back to the Islamic Movement that began to be organized in Mauritania in 1975, being based on the ideas of the Muslim Brotherhood, but it remained an unauthorized secret political movement due to the different authoritarian regimes in Mauritania's history.

Nevertheless, the Islamic Movement remained present as a significant force in the local political arena, especially with its rejection of the diplomatic ties established between Mauritania and Israel between 1999 and 2009.

[1] After the 2005 coup, and the overthrow of the regime of President Maaouya Ould Sid'Ahmed Taya, the Islamists tried to register a political party, but the military council leading the transitional phase rejected their request, which prompted them to launch the “Initiative of Moderate Reformists” on November 23, 2005, which enabled them to enter parliament and win some municipalities as independents in the 2006 elections.

[1] Tewassoul was finally legally registered on 4 August 2007 after several failed attempts during the Maaouiya Ould Sid'Ahmed Taya regime.