Japan's Nikkei rises to 15-year high after 'positive' Greek crisis talks

Investors' optimism renewed on Asians markets after hopes rise that Greece will reach deal with international lenders

Japanese shares rose to a 15-year high on Tuesday, and other Asia markets posted gains, amid renewed optimism that Greece will avoid defaulting on its debt after "positive" crisis talks in Brussels on Monday.

Investors in Japan and elsewhere in the region bought back shares after hopes rose that Greece would reach a debt deal with its international lenders later this week and avoid exiting the eurozone.