Tish B’Av (or the 9th of the Hebrew month “AV”) is a hugely fateful day in Jewish history. This year it falls on July 25th to July 26th; from sundown to sundown.
 
According to My Jewish Learning website, Tish B’Av is commemorated by mourning and fasting ~

… according Jewish tradition, because it is the day the both the first and second Temples were destroyed. Observant Jews around the world will gather to read the Book of Lamentations The Book of Eicha (Lamentations) is Jeremiah’s poetic lament over the destruction of Jerusalem and the First Temple, is read both at night and during the day.

 
“AV,” the 5th month on the Jewish calendar, occurs in July/August of our Gregorian calendar. I have no clue how it all works; the 9th of Av corresponds to a different day every year. But over the millennia the date has come to be associated with one tragedy after another for the Jewish people.
 
The following chronology of events is from Olive Tree Ministries via the Jewish Report ~

Tish B’Av is an amazing day. Here is one timeline of events that happened on the 9th of AV. The Hebrew year is listed first and the common year in parentheses:

2448 (1312BCE) Spies return from 40 days in Israel with evil reports of the Land of Israel. Jewish people cry in despair, give up hope of entering the Land of Israel.
 
3340 (421BCE) Destruction of First Temple by the Babylonians, under Nebuchadnezar. About 100,000 Jews killed during invasion. Exile of remaining tribes in southern kingdom to Babylon and Persia.

3830 (70) Destruction of Second Temple by Romans, under Titus. Over 2,500,000 Jews die as a result of war, famine and disease. Over 1,000,000 Jews exiled to all parts of the Roman Empire. Over 100,000 Jews sold as slaves by Romans. Jews killed and tortured in gladiatorial “games” and pagan celebrations.
 
3892 (132) Bar Kochba revolt crushed. Betar destroyed – over 100,00 killed.
 
3893 (133) Turnus Rufus ploughs site of Temple. Romans build pagan city of Aelia Capitolina on site of Jerusalem.
 
4855 (1095) First Crusade declared by Pope Urban II. 10,000 Jews killed in first month of Crusade. Crusades bring death and destruction to thousands of Jews, totally obliterate many communities in Rhineland and France.
 
5050 (1290) Expulsion of Jews from England, accompanied by pogroms and confiscation of books and property.
 
5252 (1492) Inquisition in Spain and Portugal culminates in the expulsion of the Jews from the Iberian Peninsula. Families separated, many die by drowning, massive loss of property.
 
5674 (1914) Britain and Russia declare war on Germany. First World War begins. First World War issues unresolved, ultimately causing Second World War and Holocaust. 75% of all Jews in war zones. Jews in armies of all sides – 120,000 Jewish casualties in armies. Over 400 pogroms immediately following war in Hungary, Ukraine, Poland and Russia.
 
5702 (1942) Deportations from Warsaw Ghetto to the Treblinka concentration camp begin.
 
5749 (1989) Iraq walks out of talks with Kuwait.
 
5754 (1994) The deadly bombing the building of the AMIA (the Jewish community center in Buenos Aires, Argentina) which killed 86 people and wounded some 300 others.

 
Many other calamities through the years are also associated with Tisha B’Av ~

Indeed, the rabbis of the Talmudic age made the claim that God ordained this day as a day of disaster as punishment for the lack of faith evidenced by the Israelites during their desert wanderings after the exodus from Egypt.
 
During the course of the centuries, a number of tragedies have clustered around this day, from the expulsions of the Jews from England and Spain to more localized disasters. Tisha B’Av is therefore observed as a day of communal mourning, which is expressed through fasting and the abstention from pleasurable activities and extraneous diversions.

Source: MyJewishLearning.com

Considering the way events are spinning out of control across the globe these days, particularly the absurd nuclear negotiations with Iran – a country sworn to the destruction of Israel(!) – let’s hope and pray that yet another tragedy doesn’t befall the Jewish people this year.
 
 
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Related:
Tish Ba’Av; Israel’s day of sorrows
Obama’s Legacy and Tisha B’Av
Heaven’s Timing and the Nuclear Deal with Iran
Tisha B’Av poll: Israelis believe Iran biggest threat to security of State of Israel