Mysterious Explosion On Chinese Docks

In April 2004 there was a "Massive explosion" on a train in northern North Korea....why? What was involved? The other day there was "another massive explosion" on the docks Tianjin in northern China.
If anyone is interested may I suggest before any vote on any Iran deal be made that Senator Kerry and President Obama request that an FBI forensics team be sent to Tianjin in northern China to investigate the docks in China....

So what possibly could have been on the docks? What deals have been made in secret between Iran and China "behind" Israels back? Iran wants to attack Israel with nuclear weapons and here are new Chinese made cruise missiles,,,,,coincidence?

Silkworm (missile)

The Shang You or SY-series (Chinese: 上游; pinyin: shàngyóu; literally: "Upstream"), and the Hai Ying or HY-series (Chinese: 海鹰; pinyin: hǎiyīng; literally: "Sea Eagle") were early Chinese anti-ship missiles. They were derived from the Soviet P-15 Termit missile.
The HY-1 and HY-2 received the NATO reporting name Silkworm. However, to confuse matters, Western media also referred to the SY-series, and its export derivatives, the Fei Long or FL-series (Chinese: 飞龙; pinyin: fēilónɡ; literally: "Flying Dragon"), as 

Silkworms.Operational history:

Iran-Iraq War The Silkworm gained fame in the 1980s when it was used by both sides in the Iran–Iraq War; both countries were supplied by China. During 1987, Iran launched a number of Silkworm missiles from the Faw Peninsula vicinity striking the Liberian-flagged tanker Sungari and US-flagged tanker Sea Isle City in October 1987. Five other missiles struck areas in Kuwait earlier in the year. In October 1987, Kuwait's Sea Island offshore oil terminal was hit by an Iranian Silkworm which was observed to have originated from the Faw peninsula. The attack prompted Kuwait to deploy a Hawk missile battery on Failaka Island to protect the terminal. 

In December 1987, another Iranian Silkworm was fired at the terminal, but it struck a decoy barge instead. Prior to these attacks the missile's range was thought to be less than 80 kilometers (49.7 mi), but these attacks proved that the range exceeded 100 kilometers (62.1 mi) with Kuwaiti military observers seeing that the missiles originated from the area and tracking them on radar along with US satellite imagery of the launch sites.

In March 1988, China agreed to stop supplying Iran with HY-2 missiles, though it reportedly supplied Iran until 1989. Iran has since developed the capability to manufacture these missiles itself.

On February 25, 1991 a shore-based Iraqi launcher fired two Silkworm missiles at the USS Missouri which was in company with the USS Jarrett and HMS Gloucester. A Sea Dart missile from HMS Gloucester shot down one Silkworm and the other missed, crashing into the ocean. Royal Air Force officers subsequently recovered an HY-2 missile at Umm Qasr in southern Iraq. It is currently displayed at the RAF Museum Cosford.

Iraq War

During the Iraq War, Iraq used the Silkworm as a surface to surface missile by firing at least two of them at the coalition positions in Kuwait.

Second War in Lebanon 2006

On July 14, 2006, in the 2006 Lebanon War when Hezbollah fired two at Israeli warships. One missile hit the corvette INS Hanit, causing significant damage and four fatalities.Iran, the reported supplier of the missile to Hezbollah, refused to formally confirm or deny the claim. The Hanit suffered severe damage, but stayed afloat, got itself out of the line of fire, and made the rest of the journey back to Ashdod for repairs on its own.
The Israeli ship possessed sophisticated multi-layered missile defense capability: a Phalanx CIWS gun, Barak 1 anti-missile missiles, Chaff and ECM. These should have been able to prevent an anti-ship missile attack such as the YJ-82, but according to the Israeli military, these were intentionally disabled at the time of the alleged missile hit due to:a lack of intelligence indicating Hezbollah possessed such a missile; and the presence of many Israeli Air Force aircraft conducting operations in the vicinity of the ship which might have accidentally set off the ship's anti-missile/aerial threats system, with the danger of shooting down a friendly aircraft. However, the ship has an (optionally installed, especially during wartime) Identification friend or foe interrogator system to prevent attacking friendly aircraft.