Have you ever heard about a mysterious law that predicts the size of a city? If you tell me the population of the largest city in a country, I can tell you the size of the second and third-biggest cities. In 1949, George Zipf came up with the simple theory called the rank-size rule, or “Zipf 's law.” Applied to the size of cities, this law says that the second city and following smaller cities should represent a proportion of the largest city.

In January 2017, the Khachapuri Index continued its upward seasonal trend, and the new average price of cooking one standard Imeretian khachapuri reached 3.67 GEL. The average price is 1.9% higher than the price was in January 2016. As for month-to-month developments, the price of khachapuri is 1.3% higher compared to the previous month (December 2016).

On February 17, interested ISET faculty, staff and students visited the Ministry of Defence's research and development centre, Delta, at the invitation of Ilia Zhorzholiani, an ISET alumnus working as the facility's Chief Auditor. The visitors were shown many of Delta's products (which were of particular interest to ISET personnel with prior military experience), including sniper systems, mortars, weapon optics and light armoured vehicles.

South Caucasus Trade Study to identify a number of areas focusing on three thematic components: (i) Trade, export, investment, and private sector development measures, (ii) Border management, (iii) New developments in regional integration.

In January, the cost of cooking one standard Imeretian khachapuri continued to increase, ranging from 3.56 GEL (Batumi and Tbilisi) to 3.92 GEL (Kutaisi), with the average cost being 3.67 GEL. The new average price is 1.9% higher than the price in January 2016. As for month-to-month development, the price of khachapuri is 1.3% higher compared to the previous month (December 2016).