Fed left interest rates unchanged, but signaled that they may soon rise

Last night the Federal Reserve left US interest rates unchanged, but they said, that the rise in interest rates may happen in the near future.
The Committee of the Federal Reserve was divided. There were three members who had agreed to increase interest rates at this meeting.
In their statement the Commission on Federal Reserve policy stated, that the possibility of an increase in the federal funds rate is getting stronger, but they decided to wait now for another proof of continued progress towards their goal.
The Fed also said, that the risks, which are facing the economy are "roughly balanced".
This is the first time that the Fed is optimistic about the prospects for the economy since last December, when they raised interest rates for the first time since 2006.