First day of Article 50 shows negotiations will be hard won.

Sources say tomorrow Greek prime minister will ask creditors for six-month extension of loan agreement, buying time for talks.

Sources say tomorrow Greek prime minister will ask creditors for six-month extension of loan agreement, buying time for talks.

Finance ministers cut rates on bailout loans, suspend interest payments.

Finance ministers cut rates on bailout loans, suspend interest payments.

With cash dwindling, pro-bailout partys win could provide brief respite from crisis.

With cash dwindling, pro-bailout partys win could provide brief respite from crisis.

Germany leads opposition to greater expansion of firewall.