The attack in Sousse is expected to impact the industry even more than the Bardo attack in March.
Hong Kong is number two, followed by Zurich, Singapore and Geneva, according to Mercer's latest Cost of Living survey.
Asia's private wealth soared 29% to $47tn in 2014, according to a Boston Consulting Group report.
The number of US rigs actively drilling for oil has dropped for 27 successive weeks.
Gold prices to take their cues from developments in Greece and from Fed speak on US interest rates.
Consolidated single institution for holding public assets with proper management would make us all better off.
Country has already been using US dollars and South African rand, as local currency suffered due to hyperinflation that hit the economy six years ago.
Treaty, known as Tripartite Free Trade Area (TFTA), will be officially unveiled at upcoming summit of African Union this weekend in South Africa.
Capital Economics believes that Brent is "now back within a whisker" of its end-2015 forecast of $60 per barrel.
US Federal Reserve expected to hike interest rates this September, a negative for bullion prices.
Commerzbank expects that Opec will confirm its production target of 30 million barrels per day on 5 June.
Bullion market awaits interest rate decisions of BoE and ECB as well as US job data.
US government data revealed that supplies fell last week, owing to a temporary fall in Alaskan output.
Gold and the greenback to react to a raft of US data through the holiday-shortened week, including revised US GDP data.
The number of US rigs actively drilling for oil have now fallen for the 23rd week in a row.