Which event matters most to your portfolio?

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Greece has dominated the attention of global financial markets for the past week as negotiations with its international creditors drag on. Talks over Greece's bailout terms are due to reconvene in Brussels on Monday, after they hit an impasse last week.

That's not the only high-profile event preoccupying markets.

While a truce between Ukrainian forces and pro-Russia separatists came into effect on February 15, reports of continued shelling in eastern Ukraine threw up uncertainties. According to Reuters, pro-Russian rebels announced they would not observe the truce on Sunday, saying it did not apply to Debaltseve, the town where a majority of the fighting occurred for the past few weeks.

Meanwhile, global central banks remain in focus following a string of unexpected moves earlier in the year, which includes the Swiss National Bank's (SNB) move to abandon the Swiss franc's tie to the euro as well as the Reserve Bank of India's (RBI) unscheduled interest rate cut.

Which of these risks do you consider most when it comes to your investment portfolio?