These tetrads have historically coincided with major events concerning Israel...
Tetrad 1. Spanish banish Jews; Jews discover America
Tetrad 2. Israel re-established as a nation in 1948
Tetrad 3. Israel re-gains most of their lands in 1967 (6 day war)
Tetrad 2014-2015:
I believe will center around Israel regaining full control over Jerusalem and the temple mound. The mosque currently there will most likely be destroyed or removed.
These events will probably begin with war declared against Israel by neighboring countries (Arab nations) as prophesied in Psalm 83.
>>I believe will center around Israel regaining full control over Jerusalem and the temple mound.<<
May be a shared arraignment based on scripture.
Zechariah 14:4 - And in that day His feet will stand on the Mount of Olives, Which faces Jerusalem on the east. And the Mount of Olives shall be split in two, From east to west, Making a very large valley; Half of the mountain shall move toward the north And half of it toward the south.