...Dukhan Bank Q.P.S.C.'s Issuer Default Ratings (IDRs) are based on potential support from the Qatari authorities, as reflected in its Government Support Rating (GSR) of 'a'. The Negative Outlook reflects that on the Qatari sovereign rating (AA/Negative). Dukhan's 'bb+' Viability Rating (VR) reflects its moderate franchise in Qatar, high balance-sheet concentrations, coverage of problem financing by reserves below that of its peers, reasonable operating profitability and adequate capitalisation. It also captures moderate reliance on wholesale funding and limited external liabilities. Government Support Rating of 'a': The Qatari authorities have a strong propensity to support domestic banks, irrespective of size or ownership. They also have a strong ability to do so, as indicated by the sovereign rating and substantial net foreign assets and revenue, although this is weakened by the Qatari banking sector's large size relative to the domestic economy and high reliance on external funding. Pressures...