By , BEIRUT, (Reuters) - Lebanese veteran politician Saad al-Hariri was named prime minister for a fourth time on Thursday and pledged to form a new government to tackle the country’s worst crisis since its 1975-1990 civil war.After his nomination, Hariri said he would quickly form a cabinet of specialists to bring in economic and financial reforms set out in a French plan to get foreign aid.But he faces major challenges to navigate Lebanon’s sectarian politics to agree a cabinet, which must then fix a mounting list of woes: a banking crisis, currency crash, rising poverty and state debts.A...…By , BEIRUT, (Reuters) - Lebanese veteran politician Saad al-Hariri was named prime minister for a fourth time on Thursday and pledged to form a new government to tackle the country’s worst crisis since its 1975-1990 civil war.After his nomination, Hariri said he would quickly form a cabinet of specialists to bring in economic and financial reforms set out in a French plan to get foreign aid.But he faces major challenges to navigate Lebanon’s sectarian politics to agree a cabinet, which must then fix a mounting list of woes: a banking crisis, currency crash, rising poverty and state debts.A...WW…