Standard & Poor's on Wednesday raised Hellenic Telecommunication Organization's (OTE) long-term credit rating to BBB- with a positive outlook, offering the telecoms company an investment grade.

The ECB's mechanisms and the staff of the major European banks have been placed in "enhanced vigilance", as the Turkish crisis is undergoing a new phase of accelerating, with unpredictable consequences.

S&P Global Ratings on Tuesday raised its long and short term issuer credit ratings on four Greek banks, Alpha Bank, Eurobank Ergasias, National Bank of Greece, and Piraeus Bank to 'B-/B' from 'CCC+/C' and said the outlook on them is stable.