The NCA dataset contains information on nuclear cooperation agreements signed by countries from 1945 to 2003. It includes more than 1,500 treaties in which states pledged to transfer nuclear technology, materials, or know-how. The dataset is based on the 2003 version of James Keeley's list of nuclear cooperation agreements.
nca_df
An object of class tbl_df (inherits from tbl, data.frame) with 3152 rows and 7 columns.
http://www.matthewfuhrmann.com/datasets.html
Fuhrmann, Matthew. 2012. Atomic Assistance: How "Atoms for Peace" Programs Cause Nuclear Insecurity. Ithaca, NY: Cornell University Press.
nca_df#> # A tibble: 3,152 x 7 #> ccode1 ccode2 country1 country2 year nca nca_type #> <dbl> <dbl> <chr> <chr> <dbl> <dbl> <chr> #> 1 2 20 USA Canada 1955 1 comprehensive power, restri… #> 2 2 20 USA Canada 1969 1 intangibles #> 3 2 20 USA Canada 1987 1 intangibles #> 4 2 20 USA Canada 1987 1 intangibles #> 5 2 20 USA Canada 1988 1 intangibles #> 6 2 40 USA Cuba 1956 1 research #> 7 2 42 USA Dominican Rep 1956 1 research #> 8 2 70 USA Mexico 1965 1 nuclear safety #> 9 2 70 USA Mexico 1969 1 intangibles #> 10 2 70 USA Mexico 1980 1 nuclear safety #> # … with 3,142 more rows#> Observations: 3,152 #> Variables: 7 #> $ ccode1 <dbl> 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, … #> $ ccode2 <dbl> 20, 20, 20, 20, 20, 40, 42, 70, 70, 70, 70, 70, 70, 70, 90, … #> $ country1 <chr> "USA", "USA", "USA", "USA", "USA", "USA", "USA", "USA", "USA… #> $ country2 <chr> "Canada", "Canada", "Canada", "Canada", "Canada", "Cuba", "D… #> $ year <dbl> 1955, 1969, 1987, 1987, 1988, 1956, 1956, 1965, 1969, 1980, … #> $ nca <dbl> 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, … #> $ nca_type <chr> "comprehensive power, restricted", "intangibles", "intangibl…