Greece's new left-wing government is pushing for a revision of its EU bailout terms, drawing up a new 10-point plan to replace the existing deal.
Greece's bailout package has "failed" and the country will not seek an extension when the deal expires at the end of February, according to new prime minister Alex Tsipras.
Investors may soon be entering a brave new world of zero yield corporate bonds, according to M&G fixed income manager James Tomlins.
The European Central Bank (ECB) has restricted Greece's access to cheap liquidity on concerns its new government is not committed to existing bailout pledges.
Germany has fallen in to deflation for the first time in more than five years, with eurozone figures falling to the equal lowest level on record.
Left-wing Syriza's Greek election win has sparked suggestions of a read-across to other eurozone countries, but some say it could be a buying opportunity for investors.
How MyFolio has coped with market volatility
Market participants have reacted with a healthy dose of scepticism to the European Central Bank's long-awaited quantitative easing programme, saying the move may not be enough to revive the struggling eurozone economy.